<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
</head>
<body>
	<script>
		// var m = new Map();
		var wm = new WeakMap();

		var zm = {
			name: "zmouse",
			age: 30
		};
		var reci = {
			name: "reci",
			age: 20
		}
		// m.set( zm,"miaov" );
		// m.set( reci,"miaov2" );
		wm.set( zm,"miaov" );
		wm.set( reci,"miaov2" );

		// wm.set( 1,"miaov" );
		
		for( var v of wm ){
			console.log(v)
		}

	</script>
</body>
</html>